Metal reenforcement for concrete



Sept. 22, 1925. 1,554,767

- 4 J. H.,SOUTHERN METAL REENFORCEMENT FOR CONCRETE Filed March21. 1924 2 Sheets-Sheet 1 2}, Attorney.

Sept. 22, 1925. 1,5545767 J. H. SOUTHERN METAL REENF'QRCEMEN'I FOR CONCRETE Filed March 21. L924- 2 SING ES-Shut 2 .Fig],

I Attorney.

Patented Sept. 22, 1925.

UNITED STATES aosnrn HEATON son'rnsmv, o mpma mo n; NG AND.

ivrn'rAL nnnnroncnnnnr FOB canon-Er s.

Application filed March 21, 1924; Serial .N-on7003805.

To all whom it may concern:

0 Be it 'known that I, JOSEPH HEATON SOUTHERN, of Messrs. Richard I-Iill & Company, Limited, Newport Rolling Mills, Mid dlcsbrough, in the county of York, England, a subject of the Kingof Great Britain and Ireland, have inventedcertain new and useful Improvements in Metal Reenforcements for Concrete, of which the following is a specification. a 1 a i This invention relates to the methods for reenforcing concrete structures by means of welded metal fabric, expanded metal, woven metal fabric, or metal bars or wires, particularly adapted for use in the construction of roads, rafts, reservoirs, retaining walls, floors, silos, ships, hoppers, coast defence works, columns, beams, culverts, pipes, piles,

and the like structures. i

The object of this invention is to provide a simple and efficient reenforcement which may be'manufactured in separate component parts adapted to beseasily and conveniently transported to. the. site of the work andquickly assembled thereon insitu to form a mat or the likeby unskilledwor. partly skilled labour.

Metal reenforcement for concrete, made in accordance with this invention comprises upper and lower reenforcing members and an intermediate fabricated member: of. zigzag formation composed of welded 'ntietal,

expanded metal, woven metal'or metal bars or wires secured together, the upper, lower and intermediate members being assembled in situ. I

The accompanying drawings illustrate one form of metal reenforcement made of metal rods or wires in the form of welded fabric in accordance with this' invention, and adapted for use in concreteroadsor the like, and of the several figures shewn therein Fig. 1 is aplan view'of one form of frame made of wire or bars secured together suitable for use as an upper and/or a lower member of the reenforcing mat.

Fig. 2 is aside elevation thereof. 7

Fig. 3 is a plan view of the longitudinal intermediate zigzag reenforcing member, and Fig. 4 is a side elevation thereof.

Fig. 5 is a side elevation of one form of transverse zigzag reenforcing member, and

Fig. 6 is an end elevation thereof.

Fig. 7 is a plan view of the reenforcing.

mat witlrall the components assembled in position. v Fig. Sis a side elevation thereof, and

Fig; 9is acorresponding end elevation. i-EFig. 10, is a side elevation showing a modified'arrangement 'of'the members. Fig. 11 isa side elevation shewinga modified form of longitudinal intermediate memb if i V T I In Figs. 1-to 9,.the upper and lower frames of the reen'forcing mat are each composed ofia, number of parallel longitudinal bars or wires (4 a spaced apart at regular intervals by transverse wires 'or bars b welded or otherwise rigidlyisecured thereto at c. The longitudinal intermediate member is. composed of a number of parallel longitudinal bars orwires (Z' bent to the zigzag form shown in Fig. 4 and" spaced apart at suitable regular; intervals, but preferably corresponding to the intervals between the longitudinal barsja a in the upper and lower members, by transverse? positioning and supporting bars or wires 6,6,? disposed nearithej-ridgcs and valleys of the zigzag longitudinal bars at and welded or otherwise rigidly. secured thereto. The transverse zigzag members 7, shewn in Figs. 5 and 6, are formed of "bars or wires having loops 9 g. at the upperand lower apices. The transverse locking members are formed of straight barsor wires h h.

In operation, assuming that the recnforcement is to be usedin a concrete 'road,the lower longitudinal member or frame is laid first. The longitudinal intermediate mom her is then placed in position with thetransverse bars e resting across and on top of the longitudinal bar a of the lower member so that the valleys of the intermediate zigzag member project below said longitudinal bars a. The transverse locking members h are placed in the valleys under the lower memberso that said lower member is locked between the locking bars h and thetransverse bars a. The transverse zigzag members. 7, when used, are placed in some or all of the valleys and/or under some or all of the v ridges of the longitudinal intermediate ,IIlBlIlbGIS before the locking members 72. are placed in position, said locking member. it being then placed through the loops 9. The upper .member is then placed in position with the longitudinal bars a resting on the transverse supporting bars 6 of the intermediate member so that the ridges of the".

intermediate member project above the upper member. The transverse locking member h is then placed in the ridge above the upper member, and, if used, through the.

loops 9 of the transverse zigzag member ft The longitudinal and transverse intermediate zigzag members are for the purpose of side of the longitudinal bars a a of the.

upper and lower members for convenience of illustration. In practice it will probably be found'preferable to alternate consecutive ridges and valleys on either side of the bars a a so as to prevent sideward movement of the intermediate member. This arrangement is shown in Fig. 10 wherein the ridges 1 and 5, and the valley 4, are shown on the near side of the bars a a, whilst the alternating ridge 3, and valley 2, are shown on the far side of said bars a a. It will be understood that. all the ridges and valleys in the same transverse plane of the intermediate member will be on the same side of the bars a a, the transverse tie bars 6 e positioning them. Transverse sliding movement of the transverse zigzag members f along the locking bars 7th" is prevented by placing the loops 9 g; between the ridges or valleys of the intermediate member and the bars a a. c

In the modified construction shewn in Fig. 11 the longitudinal intermediate member is composed of elements m on to which positioning and supporting bars a n are welded or otherwise secured. The locking bars 72. are placed in the valleys of the intermediate member as before to lock said intermediate members to the lower member. The hooked upper ends of theelements m are bent over the transverse positioning bars I) of the upper member, after said upper member has been placed in position, on the transverse bars n of the intermediate member. The transverse bars 5 will then also serve as looking bars.

,For the purpose of further security or rigidity additional transverse positioning or supporting bars 6 a may be secured to the longitudinal zigzag bars 03 as shewn dottedin Fig. 8.

The upper, lower and longitudinal intermediate frames can be made on a standard welding, weaving or expanded metal machine, or by hand, to any width or length required.

, Reenforcing mats made in accordance with this invention may be superposed to obtain greater depth if required, for example, a further longitudinal intermediate member may be placed on top and secured to the upper member and a further upper tudinal members are placed longitudinally of the structure.

In the claims the term bars is to be understood as including rodsand wires or other equivalent type of reenforcement.

that I claim and desire to secure by Letters Patent is p 1. Metal reenforcement for concrete structures, comprising in combination two outer reenforcing frames, and an intermediate reenforcing frame having a zigzag formation and interconnecting the outer reenforcing frames, each frame consisting of a plurality of parallel longitudinal bars spaced apart by a plurality of transverse bars secured thereto, and each frame thereby constituting a separate component unit, the three units being adapted to be assembled together in situ to form a mat reenforcement.

q 2. Metal reenforcement as claimed in claim 1, in which the transverse bars of the intermediate frame are adjacent the angular portionsof the latter and contact with the outer frames to space the latter apart.

3. Metal'reenforcement for concrete structures, comprising in combination, outer rcenforcing frames, an intermediate reenforcing frame having a zigzag formation interconnecting the said outer frames, each frame consisting of a plurality of parallel longitudinal bars spaced apart by a plurality of transverse bars secured thereto, the transverse bars of the intermediate frame contacting "with the outer frames to space the latter apart, and a plurality of transverse locking bars fitting in the crests and valleys of the intermediate frame, the frames being adapted'to be assembled together in situ to form a Fmat reenforcement. I

4. In metal reenforcement for concrete structures, the combination with the elements claimed in claim 3 of transversely arranged zigzag members connected respectively to the upper and lower lockingbars vto increase the rigidity of the reenforcement.

In testimony whereof I have signed my name to this specification.

JOSEPH HEATON SOUTHERN. 

